This is where the harmonic balancer comes in. The circular device, made of rubber and metal, is bolted at the front end of the crankshaft to help absorb vibrations. It's usually connected to the crank pulley, which drives accessories like the air conditioner.
Additional costs: Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually.
A: Our mitigation systems cost from $850 to $1,200. The price is depending on. 1  The size or sqf of your home. 2  The age - 50 years and older homes often have clay, not gravel, under neath the slab.